ホーム > Term: common opal
common opal
Opal without play of color. Most varieties are of no gemological interest or importance; others because of their color or markings are set in jewelry. Compare: precious opal
- スピーチの一部 noun
- 産業/ドメイン 炭鉱
- カテゴリ 炭鉱全般; Mineral mining
- Government Agency: USBM
0
作成者
- ed.young
-
(V.I.P) 21084 ポイント - 100% positive feedback
(Milwaukee, United States)
